These are certificates which a solar power plant developer acquires from the government on generation of solar power from the solar power plant. These certificates are traded on the power exchanges in a price band of Rs.9.30 per unit - Rs.13.40 per unit.
Emission reduction projects can earn saleable certified emission reduction (CER) credits, each equivalent to one tons of CO2, which can be counted towards meeting Kyoto target.
This will help in huge tax benefit on your existing business revenue. You can claim for 80% depreciation in 1st year and 16% in second year and so on for further years.